Floor tiling with a 3mm joint size may include silicone filling to full depth, as long as a bond breaker is installed to the backing substrate to maintain two-wall adhesion. Bond Breakers. Type 3 bond breakers are effective where membrane application occurs either below, or on top of the screed. When a bond breaker is needed at a construction joint, a curing compound, form release agent and the like can act as a bond breaker. Joint dimension of 4X anticipated movement allows proper function of high performance sealants even if applied at temperature extremes. Email Us. But when a sealant material is required, a portion of the filler is removed to form the necessary space for the sealant and its backing material (if required). Primer. , 11 Saw Cut Or Formed Joint Compression Seal 16" Preformed Elastomeric 9 Not Required For Construction Joints. If depth exceeds 1/2", use backer rod. for all other joints. C. Commonly. Where hydrostatic pressure exists, only bond breaking tapes must be used, notBond Breakers Bond breakers prevent three-sided adhesion of the seal-ant (i. Special Order. Add to Cart. 0m / 5. E. adequate sealant support. Typically there are three components to the Bond Breaker System; a Fillet; bond-breaker tape and a waterproofing membrane. 1. Compare. One step in the preparation of a mastic sealant joint is filling or backing out the gap prior to mastic sealant application. Compatible with Davco K10 Plus, Davco K10 Rapid and Davco Dampfast. 1. Primary use shall be with new joint construction and remedial joint. Purchase Bastion 300ml Bond Breaker Joint Sealant. Remove any masking tape immediately after applying Paraseal. Bond Breakers in Waterproofing Systems. Bastion 100mm x 50M Bond Breaker Joint Band is a waterproof reinforcing and bond breaking band that is used as wall/floor junctions to protect the most critical areas of the waterproofing application. • is impacted by sealant joint MOC (including the substrate Adhesion: Sealant joint failures in the biomedical facility environment are frequently due to. contraction to maximize accommodation of movement. Because many backup materials act as bond breakers, a separate bond breaker ma-terial is not always required. Sikaflex-1a can be used in green and damp concrete applications. D. 2. Joint Sealant Material To Be 8") (w +1 Tape Bond Breaker Or Crack Existing Joint Saw Cut Or Formed Joint 4"" to 1 8 1 4"" to 1 8 1 32" Max. 4. If joint depth does not allow for backer rod installation, use polyethylene bond breaker tape. Excellent adhesion; Flexible joint sealant; Single component; BITUMASTIC GP. Thick. Backer rods should be closed-cell polyethylene foam. The ratio of joint width toVetoflex PU780 is one part, moisture curing, low modulus elastomeric joint sealant based on polyurethane. Tool as required, although minimum tooling is necessary. The mortar in a rigid control joint must be raked out to the proper depth while it is still plastic. D. In joints where polystyrene or bitumen impregnated fillers have been used, Abelflex is ideal as a bond-breaker. Pour sealant into joint slot in one direction and allow sealant to flow and level out as necessary. Polyethylene tape is the most. Excellent adhesion; Flexible joint sealant; Single compone; Footer Menu. Anti Fungal. bead. Euco 700 Sealant Calculator. Product code: 305534. Sika® Duoflex NS is a two component, non-sag, premium quality polysulfide sealant, specifically designed for vertical and overhead surfaces. Self-adhesive, non -woven, polyester fabric for strengthening membranes. SECTION 07920 – JOINT SEALANTS PART 1 GENERAL 1. Contact CRL Customer Service. Elastomeric sealants should not adhere to the base of a joint. It is a guideline not an absolute rule. Bond breaker tape prevents adhesion to the back of shallow three-sided joints. in deep joints, the sealant depth must be controlled by closed cell backer rod or soft backer rod. bond breaker to prevent 3-sided adhesion. • For joints subject to puncture by high heels or umbrella points, a stiffer or higher density backup material is required. • For joints subject to puncture by high heels or umbrella points, a stiffer or higher density backup material is required. 5. Back-up Rod: A type of sealant backing. When used as a "backing" in expansion joints or cracks to help control the amount of sealant used or the depth of the sealant in the gap, the backer rod serves two primary functions. Expansion/Contraction: 50% (±25%) as per ASTM C719. The installation of solvent based polyurethane joint sealants beneath water based membranes can result in a breakdown in the membrane through solvent release. 03 APPLICATION A. The sealant does not adhere to it, and no separate bond breaker is required. e. This is to ensure a tight compressed fit. 6144. e. Suitable as a back-up filler for most liquid sealants Ideal for stopping contaminants such as soil entering into expansion slots and joints. 2. Apply the masking tape on the edges of the both the joint faces. A thorough wire brushing, grinding,Fastflex (formerly branded as Isoflex) extends the service life of concrete by acting as an insulator in isolation joints and expansion joints while acting as a bond-breaker for sealants. Add to Cart. A joint sealant can fail over time due to: any of the options are correct. As elastomeric sealants will not bond to Polyboard PE, the additional need for bond breaker strips is eliminated. This clear, tough plastic tape with a clear polyethylene adhesive backing is eight mils (. 5”use a 1:1 width to depth ratio and joints wider than . Dimension C must be at least 6 mm (1/4”). formed joints a polyethylene bond breaker tape must be used to prevent sealant from adhering to the back face of the joint. Acting as the required system "bond breaker", the B50 Joint Band will accommodate movement in longitudinal, lateral and transverse directions enabling high elongation, rupture resistance and up to 100% elastic recovery 💪 Clean joint surface, free from dust and other contaminants. Install approved backer rod or bond breaker tape in all joints subject to thermal movement to prevent three sided adhesion and to set the depth of the sealant at a maximum of 1/2 in. Uncured material can. It is important however that the sealant/bond breaker rain screens are backed by aJoint Sealant Material To Be 8") (w +1 Tape Bond Breaker Or Crack Existing Joint Saw Cut Or Formed Joint 4"" to 1 8 1 4"" to 1 8 1 32" Max. STEP FOUR: FILLING THE JOINT BACKING MATERIAL: closed cell, or bicellular backer rods or bond breakerA bond breaker is a separator substance applied in between adjoining solid surfaces to ensure that there is no adhesive molecular bond between the surfaces. Thioflex 600 Gun Grade is a two-component joint sealant, based on a liquid polysulphide polymer which, when mixed and applied, cures to form a tough, rubber-like seal. A further 2 full coats, at 900of the sealant to maintain minimum or maximum depth of sealant. ** Note: The use of a bond breaker is not required in expansion joints containing Expancell or Expandafoam cellular polyethylene joint fillers. Sikaflex® MS has been formulated for sealing joints in and around concrete, brick, masonry, pre-cast panels, stone cladding, windows, doors and fibre cement sheeting. High recovery rate. Dulux Avista 10L Bluestone Coloured Concrete Sealer (0) $159. the sealant during joint tooling, inherently directing the tooling force laterally to the sides of the joint to cause the sealant to wet the substrates, which promotes an adhesive bond. used. 1. Install bond breaker tape where required by manufacturer's recommendations to ensure that sealants will perform as intended. Furnish labor, materials, equipment and services necessary to caulk and seal. highest paying part-time jobs in germany for international students 2022 / 10 / 02Expansion Joints - - All expansion joints must be isolated from the membrane by a minimum 12mm wide bond breaker tape that covers the entire width & length of the joint. The combined system will satisfy the criteria of AS 3740 “Waterproofing of Wet Areas Within. Joint Sealant: Mildew-Resistant, Single-Component, nonsag, acid-curing silicone joint sealant, Greenguard certified White Lightning All Purpose Silicone Sealant. Bond breakers should be utilized with deep joint applications. If the sealant bonds in the wrong areas, it. 4. in optimal conditions, the depth of the sealant should be ½ the width of the joint. High strength while remaining elastic. Use bond breaker tape over the backer material. Required For Construction Joints (D=Conc. No bond or adverse reaction shall occur between thebond breaker and the sealant. Bond breaker tape: primarily a self-adhesive polyethylene or Teflon material; Not Recommended Materials A rigid joint filler or sealant backing in joints that will. 4. Sika® Foam Backer Rod Closed Cell is manufactured from closed cell, low density, polyethylene foam. Do not prime or puncture the backer rod. For sealing shallow joints Bond Breaker Tape is applied to the bottom of the joint so the sealant will bond only to the walls. Thick. Minimum depth is 6 mm and width is 6 mm. Crommelin Bond Breaker Bandage 100mm x 50M Bond-breaker tape made of non-woven polyester fabric called Crommelin Polyfab BB is self-adhesive and intended to be installed over joints, fissures, or other places where structural movement is anticipated. This article discusses the features of mastic sealants in the construction industry. Sikasil® is Sika’s line of professional-grade silicone sealants that are ideal for applications including glass-to-glass and glass-to-metal surfaces. Click & Collect your purchase in-store or we'll deliver it to you. Natural bond breaker; Bitumen-free and rot-proof; POLYBOARD. Apply moderate pressure to break seal inside the nozzle. Drawing a bead on proper joint sealing. EXAMINATION. preventing pipe from contact with the outer sleeve. A WATER REPELLENT, WAX BASED BOND BREAKER MATERIAL DESCRIPTION Sika® BondBreaker W is a water repellent, wax based bond breaker material. The joints should be sized so maximum extension and compression does not exceed +100 and -50 percent respectively. For use on horizontal substrates. Expansion/Contraction: 50% (±25%) as per ASTM C719. Visit our Shop Online page to learn more. Gripset Betta 4kg Water Plug (0) $57. 1. Hotwire 1200W 8m² Heating Mat (0) $1008. Unlike AIFB joint filler products, Nomaflex is: 1. Tape shall be removed immediately after the tooling. Backer rods should be used when you need to increase elasticity in sealant, reduce caulk consumption by controlling sealant depth, force adhesive into contact for enhanced bonding, or to create a “bond-breaker” which allows the joint to be easily cleaned out and refilled. Compressible Joint Sealant : Install compressible sealant in joint to depth recommended by manufacturer. A. 7 TRAFFIC CONTROL PART 2 PRODUCTS 2. 3 BOND BREAKERS 2. 01 EXAMINATIONSuitable back-up material, duracord, must be used to adjust sealant depth in the joint to comply with the joint geometry cited in the table. External walling and cladding Expandafoam Closed Cell is used as a backing strip forMasterSeal NP 2 sealant. - An extra 900-micron (0. Backer rod Sealant. 75 . 10 WARRANTY SPEC WRITER NOTES: 1. Types of bond breakers. Proper design is 2:1 width to depth ratio. (Vetoflex PBR). General purpose polyutherane exterior grade joint sealant. The backer rod most importantly acts as a bond breaker, preventing what is commonly referred to as three sided adhesion. 1 The primer used should be as named on the 4. Concrete and steel are typical substrates used with bond breakers, as they are non-metallic or metallic anti-stick materials. JOINT DIMENSIONS Joint size should not exceed 1/2" wide x 1/2" deep. Closed cell backer rod diameter should be larger (i. It is 2. Allow the primer to dry as per the specification. Refer to instructions given by rod and tape manufacturers for the correct backer rod and tape size related to joint size. Priming is not usually necessary. Innovative detailing system designed for waterproofing and sealing all types of joints, junctions, and general areas subject to. Sikaflex® MS has been formulated for sealing joints in and around concrete, brick, masonry, pre-cast panels, stone cladding, windows, doors and fibre cement sheeting. A bond breaker is therefore employed to minimise the stresses by providing bond relief and ensuring proper functionality of the membrane. B. Apply the right amount of sealant. Joints subjected to hydrostatic pressure must have a solid formed base to provide sealant support. Suitable as a back-up filler for most liquid sealants Ideal for stopping contaminants such as soil entering into expansion slots and joints. Visit your local store for the widest range of products. Rod Closed Cell provides bond breaking, assists in the control of joint depths for correct joint design and re-ducing sealant consumption. Three-sided adhesion can be eliminated by the addition of a bond breaker tape or backer rod. PRIMING3. 4 MAINTENANCE OF SEALING JOINTS Sealing joints fulfill an important role when it comes to protecting the bond line from environmental influences or simply prevention of moisture or water ingress. Collect Flybuys points when you shop in-store or online! *Some exclusions apply. They can be flexible sealants in the form of liquid, spray, rods, or tapes. from adhering to the back of a raked joint or to the backup), allowing the sealant to freely deform in response to building movements (see Figure 1c). Dimension A or B less than 6 mm (1/4”). D. "Min. In addition, DOWSIL™ 890-SL Silicone Joint Sealant can be used on asphalt. Zip pay and Paypal available to purchase products online. As the temperature falls, the force required to stretch the sealant increases. Weatherproof, highly flexible and paintable* after it’s cured, it doesn’t need a primer before use. to prevent joint depths from exceeding ½ in (13 mm). When the joints have been filled with fibre filled board, this must be raked back to the required depth. • Three-sided adhesion limits the amount of movement that a joint can accept before failing. Effective Date . It is widely utilised as a gap filler and/or bond breaker for wall joints and floor, as a filling. 6 The performance of Sikaflex MS makes it a suitable sealant for weather sealing exterior wall constructions. Because many backup materials act as bond breakers, a separate bond breaker material is not always. 5”. Sealant works like a rubber band or a shock absorber bonded between two surfaces, stretching back and forth as the two surfaces move. Latex sealant used with silicone sealant to provide bond breaker for use where minimal depth is available. • Install appropriate Tremco polyurethane sealant, TREMflex 50 or Dymonic 100 into the crack in the correct depth to width ratio. The bond breaker simply forms a separating layer between the substrate and the membrane. Tool sealant to ensure full contact with joint walls and remove air. 5 Bond Breaker Rod: The bond breaker rod shall be a closed cell, expanded polyethylene foam rod of the size and dimensions shown in the Plans. 94. Laurence Co. ® cord must be inserted into the joint to a depth that will accommodate the depth of sealant specified. Sealants will fail in cohesion (split) if bonded on. For optimum performance, the width of the sealant bead should be approximately two times the depth. Remains flexible with expansion and contraction of building component, based on good joint design. 73. Uncured material can. 1 Porous substrates 8 4. The type of bond breaker required under the above mentioned. Aspal sealant bulk / asphaltic plug , joint sealant rigid beton. Rp435. 5 Priming 4. Joint Sealant 300ml Cartridge| Exterior polyurethane joint sealant, general purpose by. See full list on ncma. - Bostik Dampfix Platinum waterproofing membrane can be applied as soon as the bond breaker joint can be over coated without deformation of the coved sealant profile. Three-sided adhesion can be eliminated by the addition of a bond breaker tape or backer rod. Gripset BRW Fillet: A preformed butyl rubber profile designed for use at wall/floor junctions as an integral part of the Gripset BRW Sheet waterproofing system. A WATER REPELLENT, WAX BASED BOND BREAKER MATERIAL DESCRIPTION Sika® BondBreaker W is a water repellent, wax based bond breaker material. To facilitate free movement, it can be achieved by adding bond breaker tape in between the joint sealant and joint filler. 7. Add to Cart. An inherent bond breaker – When using sealants, no bond breaker is needed. The sealant joint shall fully embed the bond breaker tape, extending 1/4” (6 mm) to 3/8” (10 mm) beyond the endUse joints greater than the minimum of 1/4 inch (6 mm width), since wider joints can accommodate more movement than narrow joints and can also result in a greater joint spacing. substances such as over bond breakers or incorporating other reinforcement. Find out more. Use joints greater then the minimum of 1/4 inch (6 mm width), since wider joints can accommodate more movement than narrow joints and can also result in a greater joint spacing. 3M™ Bond Breaker Tape 8891 features a strong polypropylene backing with a synthetic rubber resin adhesive. These sealants cure upon exposure to moisture in the air to form aThis product acts as a powerful bond breaker in the prevention of bottom-side sealant adhesion. 3. 3. Joint sealants help keep wind and rain out of buildings and foreign solid mat-t e r, such as dirt and ice, out of joints. Meets ASTM C920, Type S, Grade NS,. MasterSeal NP 2 sealant. Where a particularly neat finish is required, mask the face edges of the joint before sealing and remove immediately after tooling is. and of size and density to control sealant depth and otherwise contribute to producing optimum sealant performance. Most substrates only require priming if sealant will be subjected to water immersion after cure. Most substrates only require priming if sealant will be subjected to water immersion after cure. bond breaker tape sealantnext audible sale 2022. 1 + 2+ 1 4 16 11 3 d = w = Unless Specified Otherwise In The Plans4 1 8 4 1 8 Joint Sealant Material To Be As Specified In The Plans 3 d = w = Unless Specified Otherwise In The Plans4 1 8 4 Joint Sealant Material To Be5. Home DIY; Trade; Waterproofing. A rigid joint filler or sealant backing in joints that will experience movement. EN 13108-6 8. 11) Bedding The application of mastic to fill gaps or voids. Leave no voids. The use of a bond breaker allows joint movement to happen naturally, independent of the waterproofing membrane, ensuring long-term, leak-free performance. . Install tap flanges. Sikaflex® PRO is a 1-component, moisture-curing, elastic joint sealant. Visit your local store for the widest range of products. Hotwire 1200W 8m² Heating Mat (0) $1008. CHARACTERISTICS / ADVANTAGES Esay to use Closed cell Asists with joint design Assists with sealant profile Provides bond breaker Compatible with cold applied sealants (polyurethane, silicone)joint movement can be accommodated in a thin bead of sealant than in a thick bead. Flexible Joint Sealant. Aquaband is an innovative detailing system designed for waterproofing and sealing all types of joints, junctions and general areas subject to movement. PRIMINGbond breaker tape sealantaudi r8 coil pack sr20detaudi r8 coil pack sr20detA bond breaker tape is an essential component in cases where the sealant can adhere to its base surface. Add to Cart. with Bond Breaker . Compare. Bond breaker tape: primarily a self-adhesive polyethylene or teflon material; Not recommended materials A rigid joint filler or sealant backing in joints that will. • Excessive sealant depth will result in. Where the joint depth does not permit the use of backer rod, a bond breaker (polyethylene strip) must be used to prevent three-point bonding. (6. 08 APPLICABLE PUBLICATIONS: A. Where a particularly neat finish is required, mask. joint width to sealant depth should be about 2:1. Therefore, sealing joints must be considered maintenance parts which require a periodical inspection. specified. PART 3 - EXECUTION 3. $9. Product Data Sheet Show all documents. 01 EXAMINATIONJoint dimension should allow for 1/4” minimum and 1/2” maximum thickness for sealant. To properly install sealant, you need to provide a joint between two materials. Bolt down the collar to the drain flange. Bond Breakers Sec 2 2-3 ® ® Guide to Tilt-Up Bondbreakers A bond breaker is a ‘material used to prevent adhesion of the newly placed concrete to the substrate’*. , the vendor recommends appropriate field testing be performed to verify that all desired/required appearance. Features. All bond breaker rods installed shall be covered by a sealant at the end of2. Compatible with Davco K10. 99. Install bond breaker tape over substrates when sealant backings are not used. 375” to 0. Bastion 300ml Bond Breaker Joint Sealant (0) $9. Joint surfaces must be clean, dry and free from frost. In the case of Class III membranes, Figure 3. )it into the joint channel without stretching it lengthwise. (813 mm) apart. Joint must be tooled flat or slightly concave. 421. Here, we’re going to. Terminal joint, type HMA, shall consist of a sleeper slab, concrete lug, polyethylene bond breaker, and pre-compressed foam joint. e. • Neutral cure – will not corrode concrete or zinc coated. Bond Breaker Strips. to internal corners and changes in direction of substrate plane, such as wall/floor; tap bodies, water stops, drainage outlets or similar • Bond breaker joints must be a minimum 12mm x 12mm coved bead of. The ratio of joint width of sealant to depth should be 2:1. Bond Breakers: A type of sealant backing. act as bond breakers, which allow the silicone sealant to move freely with the joint. it into the joint channel without stretching it lengthwise. JOINT DESIGN QUIKRETE Polyurethane Sealants A thin bead of sealant will accommodate more movement than a thick bead. Use CRL Bond Breaker Tape to create proper two-way sealant bonds. 3. Features Snapshot. com. 8. polyethylene bond breaker tape to prevent three-sided adhesion. 3. The bond breaker tape stops the sealant from adhering to the surfaces and prevents three-sided adhesion. Second, it aids in achieving an ideal shape of the sealant (e. The sealant must be a minimum 6mm in depth at the mid-point of the bond breaker joint and extend a minimum 6mm on either side of the joint or gap. Also available in grey and white. For joints greater than 1 inch (25. Joint Width Inches (mm) Joint Depth. The joint slot width when 4. 5-8. SUBMITTALS. METHOD OF APPLICATION Avoid applying sealants below 40 °F (4 °C) unless following specific instructions for cold weather caulking. Compare. b. 932-1. Joint dimensions should allow for 6 mm (1/4 in) minimum and 13 mm (1/2 in) maximum depth of sealant. • Excessive sealant depth will result in. Add to Cart. Never use open cell rod in on grade horizontal joints. sides of the sealant. EDP-0977(653)--7Y-29 . As we11 as the backup material having been either poorly positioned for depth, or inadequately held so that it moved when the sealant was applied. Our backer rod (backstop / bond breaker), is designed to work with all popular sealants including NP1 Polyurethane, a Novalink Polyether, M1, Duralink, glazing sealants and self leveling sealants like Novalink SL or SL1 and SL2, as well as butyls, polyurethane, silicones, tri-polymers, polysulfide. Bond Breakers: A type of sealant backing. Follow the manufacturer’s instructions. Use either a backer rod or tape bond. (Class 1225) - are generally more resistant to such damage. Bond Breaker Polyethelene Tape Black Roll used in shallow building joints to prevent 3 sided adhesion. Sealant backer material is available in three types: Type I, Type II, and Type III, and serves one or more of the following purposes: (1) limits the amount and depth of sealant applied to a joint, (2) acts as a barrier interface to prevent backside adhesion (bondbreaker), and (3) provides a form to assist the sealant in developing a shape factor. Emer-Proof Joint Seal Tape performs as the waterproofing system bond breaker, avoiding the use of sealant beads and backing rod bond breaker methods. au4. Install bond breaker tape or backer rod to prevent bond at base of joint. WPA MS is a single component, moisture cured silane modified hybrid sealant free of solvents and isocyanates, with a very low VOC content. 2. This ensures the correct and uniform sealant depth along the whole length of the joint. Add to Cart. Meets Federal Specification TT-S-00230C, Type II, Class A. When a bond breaker is needed at a construction joint, a curing compound, form release agent and the like can act as a bond breaker. Acts as the bond breaker for the waterproofing system eliminating need for other sealants/tapes. Tel: +61 3 9279 9333. • Use backer rod or bond breaker tape to eliminate a situation of "three‐sided adhesion" • Use 2:1 width to depth ratio to accommodate more movement than a thick joint (i. Home DIY; Waterproofing. Bond Breaker for extra protection. 03 APPLICATION A. Because many backup materials act as bond breakers, a separate bond breaker material is not always required. 0-6. Bond Breaker. In joints where polystyrene or bitumen impregnated fillers have been used, Abelflex is ideal as a bond-breaker. Color: Clear: EUCO 700: Semi-Rigid Joint Filler quantity . a. 3. High elasticity – cures to a durable, flexible consistency with exceptional cut and tear-resistance. 1. Use a Sika PEF backing rod to form the joint base. Open cell polyurethane foam or closed cell polyethyleneSilicone WP Plus sealant is available in translucent, grey and white and is also suitable for use as a finishing and roof & gutter sealant. 3 Low Modulus Silicone Sealant: 932. Closed cell backer rod should be 25 % larger than. StorageWith a given sealant and given conditions, the shape factor of the joint will determine its performance. Sika® Foam Backer Rod Closed Cell is manufactured from closed cell, low density, polyethylene foam. Tool as required to properly fill joints and force sealant against joint interfaces, maximizing bond. It is suitable for movement and connection joints for indoor and outdoor applications. We also provide all type of joint sealants. Joint walls must be sound, clean, dry, frost-free, and free of oil and grease and any other contaminants. It is important to place the sealant in its designed location for the system to function. Elastic reinforcement essential for the critical movements areas. Stress relaxation to prevent splitting at edges. Filler: A sealant backing used behind a back-up rod. Heat and melt the sealant in a melter constructed either as a double boiler filled with a heat-transfer medium between the inner and outer shells, or with internal tubes or coils carrying theElastoproof B50 / B10 - Bond Breaker Joint Band. Bond breaker tapes are available in following width:15mm, 20mm, 25mm, 50mm. 9 mm) wet coat extending a minimum 35mm either side of the bond breaker tape must be applied as an extra coat. Most substrates only require priming if testing indicates a need. Protect surfaces with masking tape. D. The polyethylene bond breaker shall be an approved polyethylene sheeting having a thickness of 6 mils or greater. The cured sealant. In fact, some types of joint fillers can serve as a backing material and bond breaker, in which the applicator can apply the sealant directly on the filler. 2 cm) thick. Davco K5 Bond Breaker is a neutral cure silicone designed to be used as a bond breaker in the installation of Class II & III waterproofing membranes. - Low moisture absorption. duracord is a self-releasing material, but if soft-board or cork is used as the joint filler, a plastic strip bond-breaker must be placed on the filler surface before sealant is applied. Sika Sikaflex 1A Polyurethane Elastomeric Joint Sealant And Adhesive - 20 Ounce Sausage. Recess Joint Sealant Polyethylene Bond Breaker Tape Polyethylene Bond Breaker Tape Recess Joint Sealant Joint filler board In a typical joint the sealant should adhere to both opposite surfaces of the sealant slot but not to its base, leading to two sided adhesion; not three sided. WPA MS is a single component, moisture cured silane modified hybrid sealant free of solvents and isocyanates, with a very low VOC content. 55. Provide bond breaker (tape or rod). e. Masking tape When the sealant is applied in the joints, the sides of joint may be damaged by spreading of sealant. Publications are referenced in text by basic designation only. In joints up to 0. 3.